sm1.rank
sm1.rrank
returns the holonomic rank when a is regular
holonomic. It is generally faster than sm1.rank
.
[284] sm1.gkz([ [[1,1,1,1],[0,1,3,4]], [0,2] ]); [[x4*dx4+x3*dx3+x2*dx2+x1*dx1,4*x4*dx4+3*x3*dx3+x2*dx2-2, -dx1*dx4+dx2*dx3, -dx2^2*dx4+dx1*dx3^2,dx1^2*dx3-dx2^3,-dx2*dx4^2+dx3^3], [x1,x2,x3,x4]] [285] sm1.rrank(@); 4 [286] sm1.gkz([ [[1,1,1,1],[0,1,3,4]], [1,2]]); [[x4*dx4+x3*dx3+x2*dx2+x1*dx1-1,4*x4*dx4+3*x3*dx3+x2*dx2-2, -dx1*dx4+dx2*dx3,-dx2^2*dx4+dx1*dx3^2,dx1^2*dx3-dx2^3,-dx2*dx4^2+dx3^3], [x1,x2,x3,x4]] [287] sm1.rrank(@); 5
Go to the first, previous, next, last section, table of contents.